I have postural orthostatic tachycardia, and dysautonomia. I'm always dizzy and it feels like everything in me plumets to my ankles when I stand but my feet don't swell much and are always cold. I was told to get some compression socks. First I tried some 20-30mm socks, my feet instantly went numb. So now I'm trying a pair of 8-15mm compression socks, at first they felt nice and firm, after almost two hours I was dizzy, and my upper body was kind of hot, while my feet turned to ice. I decided to take them off for a little while, when I stood up it felt like my head split open, my legs were pretty weak, and just felt like collapsing back onto the couch. Now I have a headache and it hurts sit up if I'm lying down, or stand if I'm already sitting.
This doesn't seem normal to me, but could I just be getting used to them?
Also, my blood volume has been a little low during both attempts with the socks. I'm still trying to adjust to drinking 3 liters of water a day and I'm not quite reaching that mark just yet(I'm used to drinking maybe 1 liter a day.) Should I try again once I've regulated my water intake? What are the socks supposed to feel like after you put them on and wear them a little while?